<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>


</head>
<body>

<form action="http://127.0.0.1:5000/index/" method="post" enctype="multipart/form-data">
    <label for="username">用户：<input type="password" id="username" class="c1 c2" placeholder="请输入用户名" name="username"></label>
    <p>
        密码：<input type="password" placeholder="请输入密码" name="password">
    </p>
    <p>
        生日：<input type="date">
    </p>
    <p>
        <input type="radio" name="gender" value="male">男
        <input type="radio" name="gender" value="female">女
        <input type="radio" name="gender" value="hidden">保密
    </p>
    <p>
        <input type="checkbox" name="hobby" value="游泳">游泳
        <input type="checkbox" name="hobby" value="篮球">篮球
        <input type="checkbox" name="hobby" value="羽毛球">羽毛球
    </p>
    <p>
        邮箱：<input type="email" name="email">
    </p>
    <p>
        <select name="" id="">
            <option value="">北京</option>
            <option value="">上海</option>
            <option value="">苏州</option>
            <option value="" selected>昆山</option>
        </select>
    </p>
    <p>
        <select name="" id="">
            <optgroup label="北京" >
                <option name="北京" value="">海淀</option>
                <option name="北京" value="">朝阳</option>
            </optgroup>
            <optgroup label="上海" >
                <option value="" selected>徐汇</option>
                <option value="">普陀</option>
            </optgroup>
        </select>
    </p>
    <p>
<!--     你的代码   <input type="file" multiple>-->
        <input type="file" name="aaa">

    </p>
    <p>
        <textarea name="" id="" cols="30" rows="10"></textarea>
    </p>
    <p>
        <input type="submit" value="提交">
        <input type="button" value="按钮">
        <input type="reset" value="重置">
    </p>

</form>


</body>
</html>